| 摘要 |
The invention concerns a low oxygen powder comprising particles of a base powder consisting of essentially pure iron, and an insulating oxygen containing barrier. The oxygen content of the new powder is at most 0.2% by weight higher than the oxygen content of the base powder and the oxygen barrier has a thickness of at most 100 mu m as measured by the AES method. A distinctive feature is also that the ratio O:P is between 30 and 1, preferably between 15 and 2 as measured by the ESCA method. The invention also includes a process for the preparation of the low oxygen powder. |
